Pump



Nov. 19, '1929. e. D. COLLINS 1,735,893

I PUMP Filed July 14, 1927 2 Sheets-Sheet l Nov. 19, 1929.

(5. D. COLLINS PUMP Filed July 14, 1927 2 Sheets-Sheet 2 r patented Nov.19, 1929 oss '1 ha ms; swarm-w xes.'1 if? Application? filed July 14,:

\ Y'IEhis invention relates to new' fand useful!- improvementsin'apum'p.One object oft'heinvention} is to prov de a;;pun1p embodyingafcasinghaving an ntakeand a dischargejwith a-novel typeof impell r blade,in-the casing'and novelzmeans for. rotating the blajcle toefijectz theintake? and discharge 01f the fluid beingpumped. r A {Another object of;the i'nvention is to pro- .videj; inja;pump,;a' novel type offpacking'be-o tween said bladel and the casing iwall. j

,-A=furtherfeature of the invention is to provide, :inapump, a valve;{controlled bypass from the high pressures de ofth'e cas ng chambertoftheQ-low' pressure slde of said 'chamber,;fi f-- i H, v Zi .':1' -Astill ;further feature of the'invention s tonprovide,f=in aipump of-thegcharactler describedxa, driving eccentric in contact wlth the 7,;

w'a'll of the casing; chamber, between the intake a and dischargeopenings, wit'h-i means for; adj usting' 'xSELlCl {eccentric to i mantaln' a{ close-jointbetweenitand sald wall.- With the above. and other,1 objects in ;V18W 2 this invention has particular relation to cer-'tain novel features of constr'uctiongoperat on and arrangement of"parts, 723,11 example of which is given in thisrspecification and lllus-o tratedliii.the' aiccompanyiingi drawings, where- --1I12- Figure 1shows an end view oi the pump, shown partly in section and with the endplate removed. V

Figure 2 shows a vertical sect onal view 0f the pump taken on the l1ne2.2 of Fig- .ure 1.

Figure 3 shows a side vlew of blade.

Figure 4 showsan lnside view of the re ie movable end plate of the pumpcaslng.

Figure 5 shows a sectional View thereof, taken on the line 55 of Figure4, and

Figure 6 shows a sectional view thereof taken on the line 66 of Figure5. v E Referring now more particularly to the drawings, vwherein likenumerals of reference designate similar parts in each of the fig ures,the numeral 1 designates a pump casing as a whole which'has one of itsend plates,

the impeller Be 2, removable and whose other end plat centric and theinnerwall'of the'5casing1 thus is "formed with eirtended tubular 3 whichcarries a 'stuffin box The pump casing has. the intakeline 4 and thedischarge line 5 entering the pressure chamber "6; in the casing.

, bearing -The jeeccentric, 7 eworks in trictionalcontact ;with theowalloflthe-chamber; 6.- 'v between the intakevline 4 and 'thedischarge Il/Vithin "said chamber there i si g an eccentric 7- preferably cupshapedin form o a and this-eccentric is-EfiXecl;toftheinnerend of;

line; 5, said pressure chambenbetween' tllie-eecentric 7- has i theioppositely;.:disposed notches ends of :said':impellerabladerrbeing,widened;

as atal3rso' as to zextend' entirely acrossw-the 5-.

thelcasing'an'd notches *1 1 are ofrsufli'cientt depth tape-mm arelative: radial'a-movement ;-chamber 6 from :endplate?tozendiplateyofis v of the blade and? eccentric asthe eccentric isrotate diThis impeller blade hasl a central transversely elongated" bearing 14'andathere Y is 'a bearing pin15 *mountednihxa. suitable :5

bearing 16 in the end plate 2with its Finnr end 16 lprojectinglintowsaidj bearing :14,'*said' s lnner end 16belngeaenlarge'dj'as 'shovvnunm Figures 1 and 2 andconcentric:;withfrespet to "the chamber sThe oii'terelids of :theinipeller blade 12 have the deep grooves "1 7 17,

cut: across said fendsgwith suitable packing strips 1'8, 18,. seatedtherein': wT-herle-isfianarcuate 's'pringf "19 5 whose ends 20 1 are.Fout-" ward-1y turned "and 5 work throu'ghzthe bear- 1; ings 1 21; 21in said* blade; :withthein oiuter? 'ends resting against' theiinne'r'isicles of the :2-

packing strips 18 and holding the: packing-=5 yieldin-gly against theinner wall-:of the cham-I ber As the "eccentric '7; is -r0t'atd theimpeller.

blade will sweep around they-wall o1".the chamber 26 and Will.indfucezthe fl'ow'o'f the' fluid" being pumped through i the inlet pipe7 1 into the chamber 6 :behind the impeller bladelanfd will force thefluid inisa-id;chamberfinfrontgI of the impeller blade out through thedischarge pipe 5. The sleeve 9, as hereinbefore stated, is eccentricwith relation to the shaft 8 and is held in fixed relation inthe bearing3 by means of a set screw 22. In case the periphery of the eccentric orcontacting portion of the wall of the chamber 6 should become worn.

I so as to permit leakage through the joint between them the set screw22 may be loosened and the sleeve 9 adjusted so asto cause a closer fitbetween the worn parts andtlie set screw '22, then tightened to securethe sleeve 9 in blade and a low pressure chamber behind the other end ofthe impeller blade.

such position of adjustment.

It is to be noted that the shaft 8 may be.

rotated in either direction. If rotated in one direction the pipetwillserve as an inletpipe and the pipe 5;a s a discharge pipe but ifrotated in the other directionthe pipe 5 will serve as an inlet pipe andthe pipe 4 as a discharge;

' The chamber 6 is, in effect, separated by the impeller blade 12into ahigh pressure chamber in front of one endof the impeller The removableend plate 2 1s formed with two valve casings 23,24, and has the reliefconduits 25, 26, therethrough which lead throughthe respective valvecasings 23, 24, from the high pressure chamber, as above described tothelow p'ressur'e chamber. These valve casings 23, 24, are closedbywtheouter end caps 27 28 and located inrsaid casings are the relief valvesas 29 which work against and are 'IlOIIIlflllYhGldiClOSQd by thepressure springs 30. In case the discharge line 4, or 5 as the case maybe, should for any reason hecome clogged or blocked so as to cause anexcessive pressure in the high pressurechamber the corresponding valve29owillbe lifted to permit the return of the fluidthrough thecorresponding conduit 25 or .26,'as the'case -may be, to the lowpressure sideof the chamber! The springs 30 are of sufficient strengthto hold the valves 29'closed during the nor- 'mal operation :of thepump, to block the corber in'saidchamber and in contact with theresponding relief conduit. I What.Iclaimxis:' I i 1. A pump includinga'cas1 a'dischargeoutlet, a rotatable driving memchamber wall betweensaid inlet and outlet,

a transverse impeller blade spanning said I chamber and operativelyconnected with and driven by said driving member, packing elementscarried by the blade ends, and a single yieldable member against therespective ends of which the respective packing elements are mounted,and which is effective to hold said 7 elements yieldingly against thewallsof said chamber and means for adjusting said driv- Vingmember'relative to the chamber wall.

2. A pump including a casing having an "internal chamber provided withaninlet'and ng having an internal chamber provided with an inlet and anoutlet, a rotatable driving member in said chamber, said member'beingeccentric with respect to said chamber and having its periphery incontact with the chamber wall between said inlet and outlet, a driveshaft fixed to said driving member, a bearing in the cas ng, a sleeve insa1d bearing. having an eccentric bearing in which said shaft rotates,

said sleeve being adjustableto vary the posi- I i an impeller bladespanning sa1d chamber tionof the driving member in said chamber,

whose ends are disposed to sweep around the chamber wall, said bladebeing operatively connected with said driving member, packing carried byeach end of said blade, anda single yieldable member *whose respectiveends work, against said packing to hold the same against the casingwall.

3. A pump including a casing having an I internal chamber provided withan inlet and an outlet, a rotatable driving member in said" chambensaidmember being eccentric with respect to said chamber and having itsperiphcry in contact with the chamber wall between i said inlet andoutlet, a driving shaft fixed to said driving member, abearing in thecasing, a sleeve in- "sa1d bearing having an eccentric bearlng 1n whichsaid sha f't rot ates, said sleevebeing adjustable to vary the positionof the driving member insaid chamber, an

stantially concentric with the chamber thereof, said impeller bladehaving a bearing on said bearing member. 7 i

'In testimony whereof I have signed my name to this specification.

' GEORGE VD. COLLIN-S;-

